Spindle-bolster



(No Model.) 6 W. T. & E. J. CARROLL.

SPINDLE BOLSTER.

No. 340,656. Patented Apr. 27;I 1886.

UNITED STATES PATENT OFFICE.

XVILLIAM T. CARROLL AND EDGAR'J. CARROLL, OF WORCESTER, ASSIGNORS TO THEEUREKA SPINDLE COMPANY. OF AYER, MASSACHUSETTS.

SPINDLE-BOLSTER.

P'ElCIFICATION forming part :if Letters Patent No. 340,656, dated April27,1886.

Application filed December 28, 1885. Serial Xo. 1S6,.'\.33.

To all whom it may con/cern:

Beit known that we, WILLIAM T. CARROLL and EDGAR J. CARROLL, citizens ofthe United States, and residents of Vorcester, in the county ofWorcester and State of Massachusetts, have invented certain new anduseful Improvements in Spindle-Holsters; and we do hereby declare thefollowing to be a full, clear, and exact description thereof, referencebeing had to the accompanying drawings.

Our invention relates to that class of holsters in which all thebearings for the spindles are integral; and it consists, essentially, inattaching or connecting the bolster to the bolsterrail in a yielding orflexible manner, such at tachmeut preferably being at one point only,and that point being located outside of or ec centric to the axis ofrotation of the spindle, the object of such construction being to enablethe spindle to run steadily at high speed, and also to prevent thecommunication of jar or vibration from the bolster-rail to the spindle.

Heretofore holsters of this class having a yielding capacity or attachedto the bolsterrail in a flexible manner have been connected to thebolster-rail at more than one point of attachment, such points beingarranged at or around the axis of rotation of the spindle, and allyielding which took place being about such axis as a center of motion.In this our ii'n provenient, however, the point of attachmentis whollyon one side, or eccentric to such axis, and the motion of the bolster isabout a new and independent center which is thereby established, and agreatly improved result is acconiplished. This improved result is inpart due to the fact that the center of motion being located at one sideor away from the spindle and its bearings, the saine degree of freedomat such distant point will afford the spindle a muc-h greater degree ofmovement or adjustment by reason of the distance between such point andthe spindle.

Referring to the drawings, Figure l is a central sectional elevation,showing the spindle and its sleevewhirl, the sectional bolster, and thebolster-rail in detail; Fig. 2, a like view, showing a modification inthe method of connecting. the sections of the bolster together.

under its head.

(No model.)

In Fig. l it will be seen that the lower sec tion or bolster base, A, isattached to the bolster-rail B in the usual manner. It extends backwardover the rail and is provided with the drop or downward extension a,which is drilled to form a socket for the pinp. The upper section, C,having the supporting-tube c, which receives and supports the spindle s,is attached to the lower section by means of the pin or stud p, which isfirmly attached to the upper section, but is loosely fitted within thesocket formed for it in the extension a. The yielding` washers d and eare placed between the upper and lower sections, and the pin p may becushioned by means of oil or other yielding packing placed around it inits socket. The screw r serves to prevent the upper section from beingraised in doing,

and is provided with a yielding washer, t,

The cavityf, formed in the lower section, receives the extension g,formed on the under side of the upper section, and allows the foot ofthe spindle to be extended downward, as shown.

In Fig. 2 the parts a and p are reversed, the pin extended upward andattached -to the lower section, while the socket a is attached or formedon the upper section and sleeves upward around the pin, fitting itloosely, as before. This arrangement has the advantage that it bringsthe pull of the band midway of the pin and socket, and does not tend todeiect the spindle from the perpendicular. Ve therefore consider thisforni or arrangement as the most desirable one to carry out ourimprovenient.

Having thus described our invention, what we claim isl. A spindle andits sleeve-whirl, a com bined bolster and step for such spindle,provided with a sumiorting arm or extension, a bolsterabase adapted tobe attached to the bolster-rail, as usual, and a connecting pin or studlocated outside of or eccentric to the axis ofthe spindle, and adaptedto connect the said bolster and base and support the bolster against theband-pull, as set forth.

2. A spindle and its sleeve-whirl, a coni- -bined bolster and step forsuch spindle, having a vertical tube or socket formed on the our handsin the presence of two subscribing buse of the bolster at a pointeccentric to the witnesses. axis of the Spindle, a bolster-base adaptedto l he attached to the bolster-mil, as usual. und VILLIAM T CARROLL' `1provided with u xed piu or stud adapted to EDGAR J (JARROLL' enter thesaid tube or socket und support the Vtnesses: bolster therefrom, as setforth. H. S. HASKELL.

In testimony whereof we have hereunto set FREDK. J. BARNARD.

